2-coil stator Flywheel description:

• Outside height of brass: 41.3mm [1.65"] or 1 5/8" high
• Overall OD including "tab": 112.2mm [4.4"]
• Overall OD not including "tab": 109mm [4.32"]
• ID of magnetic area: 86.35mm [3.4"]
• OD of inside hole: 27.7mm [1.09"]
• ID of inside hole: 18.6mm [.73"]
• Cutout flywheel key notch.
• OD of starter clutch: 79.8mm [3.14"]

Known to fit most 50cc to 125cc engines same as the 3 kinds of engines, please do not buy if your engine is Gy6 50cc or kick start engine, check picture if same as yours before purchasing.